Sigma 2x EX DG APO Teleconverter

I have a good opportunity to buy the Sigma 2x EX DG APO Autofocus Teleconverter at good price.

Any data on it? I know that the Kenko is recommended but didn't hear anything about the Sigma teleconverter.

Thanks.

I have a good opportunity to buy the Sigma 2x EX DG APO Autofocus Teleconverter at good price.

Any data on it? I know that the Kenko is recommended but didn't hear anything about the Sigma teleconverter.

 

Thanks.

I use it on my Sigma 300mm f2.8 lens. Results are great although not as sharp as in combination with my 1.4 APO converter

Arnon, This teleconverter is "dedicated" to Sigma EX series telephoto zoom with HSM if I recall, make sure you try it on your lens if they are not Sigma to confirm that everything is O.K.

Oop yest that's true. I cannot use the converters on my NIkon 105 or 60mm lenses.

Tn'x for the important info.

Its won't be good for me so Kenko is the one for me